WeWork makes more money from an oversubscription model, and thus could also make money from desks being unused. (Have 10 desks, rent out "13", and hope that all 13 people don't need desks at the same time).
Neumann committing fraud, poor cash management, and self-dealing conflicts of interest are what killed WeWork. Not the coworking space concept.
I could definitely understand the business model (it's cloud computing for real-estate!) and especially cool for remote/business travelers since from what I understand it was rather easy for a WeWork user to use any of their facilities.
Same way a WeWork is more expensive than renting your own real estate but it's probably simpler than getting into a long term lease. Plus if your startup has to scale up WeWork can accommodate, unlike your typical office rental.